Mineralogical studies of bentonite, Implications for activation using chemical methods

Abstract

Montmorillonite is the main bentonite forming mineral which has special characteristics such as suspension, swelling and colloidal properties. It can absorb water to become larger in volume.

Good absorbents are extensively used in industry eithersimply dried or after chemical activation. The chiefconsumer of these clays is the oil refinering industry whichuses them to purify fractionation products of suspendedmatter and as drilling muds.

This study on bentonite shows that mineralogicalcomposition and concetration of Al2O3, MgO in montmorillonite are the most important characteristics forchemical activation of bentonite.

In addition to above factors, the temperature, acidconcentration and time are also considered for activation.

Keywords

References

[1] کریم پور، محمدحسن، کانیها و سنگهای صنعتی، انتشارات جاوید (1368).

[2] کوهساری، امیرحسین، محمدتراب، فرهاد، بررسی روش تولید بنتونیت فعال از بنتونیت‌های معادن استان یزد، طرح پژوهشی دانشکده مهندسی معدن دانشگاه یزد (1378).

[3] Brindly G.W., Crystal Structures of clay Minerals and their X-ray identification, Mineralogical Society Monograph, No. 5, London (1980).

[4] حجازی، مجتبی، قربانی، منصور، مجموعه زمین شناسی ایران (بنتونیت، زئولیت)، سازمان زمین شناسی کشور (1373).

[5] Mills G.A., Holmes J., Cornelivus E.B., Acid Activation of some Bentonite Clays, Thehoudry laboratory Pennsylvania (1946).

[6] Frenkl M., Surface Acidity of Montmorilonite, Clay and Clays Minerals, 22 (1974) 435-441.

Files

History

  • Receive Date: 02 July 2025
  • Revise Date: 04 February 2026
  • Accept Date: 02 July 2025

Share

How to cite

Statistics